The picture above show the smaller, single channel USB to CAN Adapter.
The picture above show the more powerfully XPortHub that provide USB, CAN, RS-485, RS-232, UART, SPI and I2C channels.
The USB to CAN adapter is designed as a low cost adapter while XPortHub is designed to be a component in a modular control system. But, they are both excellent USB/CAN Adapters.
The CAN ports offered are CAN-HS (High Speed). It actually also exist a CAN-LS/FT (Low Speed or Fault Tolerant). The HS bus uses 2 wires, while the FT version uses 4 as it includes + and – and schemes for communication if one of the twisted pair lines break. This is however rarely used as most systems prefer to just use 2 CAN ports for redundance